Karl Henry, meanwhile, has until June 30 to exercise his contractual option to remain with the club for a further year.

Ferdinand had previously stated that the 2014-15 season was likely to be his last as a player.

The former England captain was unavailable in the closing weeks of the season as his wife Rebecca battled cancer. She died earlier this month.

Barton featured in 28 of QPR's 38 Premier League matches and also skippered the side, while Zamora was involved in 31 league games and provided one of the highlights of his team's season with a stunning goal in a 4-1 away victory at West Brom in April.

Dunne was also a regular in QPR's team this season, but Wright-Phillips and goalkeeper Murphy found themselves out of favour.